| Patents for C22B 19 - Obtaining zinc or zinc oxide (2,969) |
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| 10/02/2013 | CN103334008A Smelting method and smelting device for acid mud treatment |
| 10/02/2013 | CN103334007A Method for recycling copper extraction raffinate produced in roasting, acid leaching and extracting processes |
| 10/02/2013 | CN102586596B Heat exchange device for leachate in pressure acid leaching treatment process of zinc sulfide concentrate |
| 09/26/2013 | US20130247718 Methods Of Metal Extraction Using Oximes |
| 09/25/2013 | CN103328661A Process for recovering zinc and/or zinc oxide ii |
| 09/25/2013 | CN103320625A Zinc smelting furnace |
| 09/25/2013 | CN103320609A Process for using jarosite ore pulp to directly wash ore without filtering |
| 09/25/2013 | CN102828031B Method for separating, gathering and purifying cobalt, zinc and ferrum by heavy metal adsorption material |
| 09/25/2013 | CN102353250B Zinc-cadmium electric heating smelting rotary kiln |
| 09/25/2013 | CN101942564B Process for producing pure cadmium by continuous reduction and distillation of zinc cadmium slag and sponge cadmium |
| 09/18/2013 | CN203200319U Zinc concentrate magnetizing roasting process equipment |
| 09/18/2013 | CN103305692A Leaching method of zinc sulfide concentrate |
| 09/12/2013 | US20130236378 Selective Recovery of Manganese and Zinc From Geothermal Brines |
| 09/11/2013 | CN203187731U Equipment for smelting lead and zinc by bottom blowing smelting and electrothermal reduction |
| 09/11/2013 | CN103290233A A melting and gasifying device for zinc |
| 09/11/2013 | CN103290214A Method for depositing iron from ferruginous zinc sulfate solution |
| 09/04/2013 | CN103282308A Method and device for supplying zinc gas |
| 09/04/2013 | CN103276212A Method and apparatus for purifying leaching solution of zinc hydrometallurgy |
| 09/04/2013 | CN103276197A Method for performing flash reducing and roasting on zinc calcine |
| 09/04/2013 | CN102312101B Extractant for treating heavy metals in fly ash and method for extracting heavy metals with the extractant |
| 09/03/2013 | US8524177 Process for purifying zinc oxide |
| 08/29/2013 | US20130220824 Method for producing metal zinc |
| 08/29/2013 | US20130220077 Method and apparatus for high temperature production of metals |
| 08/28/2013 | CN103266228A Zinc-containing flue slag block recycling method |
| 08/28/2013 | CN103266226A Method for extracting silver from silver-containing zinc concentrate and improving quality of zinc concentrate |
| 08/28/2013 | CN102649998B Method for separating and enriching copper, cadmium and zinc in copper and cadmium sediment |
| 08/22/2013 | WO2013120132A1 Process for zinc oxide production from ore |
| 08/22/2013 | US20130216456 Selective leach recovery of zinc from a composite sulphide ore deposit, tailings, crushed ore or mine sludge |
| 08/21/2013 | CN203144496U Inner tank for zinc slag double-vacuum purification |
| 08/21/2013 | CN103255296A Energy-saving and environment-friendly new technology for production of zinc oxide in rotary kiln and comprehensive recovery of iron copper gold silver indium |
| 08/21/2013 | CN103255285A Lead-zinc-silver mixed concentrate comprehensive recovering method |
| 08/21/2013 | CN102828051B Desiliconization process in zinc hydrometallurgy |
| 08/15/2013 | US20130209336 Selective recovery of manganese, lead and zinc |
| 08/07/2013 | EP2622108A1 Selective leach recovery of zinc from a composite sulphide ore deposit, tailings, crushed ore or mine sludge |
| 08/07/2013 | CN103237909A Selective leach recovery of zinc from a composite sulphide ore deposit, tailings, crushed ore or mine sludge |
| 08/07/2013 | CN103233129A Wet-process open treatment method of arsenic in copper ashes |
| 08/07/2013 | CN103233120A Method for improving surface activity of floatation silver concentrates during oxygen pressure acid leaching process |
| 08/07/2013 | CN102534235B Method for recovering valued metals from cobalt-nickel residue obtained through antimony trioxide purification in zinc hydrometallurgy |
| 07/31/2013 | CN102586599B Method for recovering valued metals from zinc anode sludge |
| 07/31/2013 | CN102492856B Method for reducing water-soluble zinc in zinc-containing slag produced in zinc hydrometallurgy |
| 07/25/2013 | WO2013108645A1 Hydrogen sulfide gas production plant and method for recovering and using waste hydrogen sulfide gas |
| 07/25/2013 | US20130186236 Energy Efficient Salt-Free Recovery Of Metal From Dross |
| 07/24/2013 | CN203080033U Zinc steam induced type automatic condenser |
| 07/24/2013 | CN203080032U Vertical-type normal-pressure zinc evaporation furnace |
| 07/24/2013 | CN103221557A Method for producing nickel-ontaining acidic solution |
| 07/24/2013 | CN103215457A Method for extracting rare chemical element from electrolytic manganese residues |
| 07/24/2013 | CN103215435A Method for comprehensively recycling zinc, copper, lead, gold, silver and sulfur from floatation silver concentrate |
| 07/18/2013 | WO2013104045A1 Method for selective precipitation of iron, arsenic and antimony |
| 07/17/2013 | CN203065554U Device for extracting pure copper and pure zinc from brass |
| 07/17/2013 | CN203065547U Brass smelting furnace |
| 07/17/2013 | CN103210099A Hydrometallurgical method for the recovery of zinc in a sulphur medium from sulphured zinc concentrates |
| 07/17/2013 | CN103205582A Bottom blowing smelting electrothermal reduction lead and zinc smelting process |
| 07/10/2013 | CN103194619A Fusion casting method of cathode zinc sheets |
| 07/10/2013 | CN103194618A Method for sulfurizing zinc oxide ore |
| 07/10/2013 | CN103194602A Method for removing iron and recovering iron-enriched iron scum in wet-method zinc smelting process |
| 07/10/2013 | CN103194600A Method for purifying zinc sulfide solution |
| 07/10/2013 | CN103194599A Method for processing zinc sulfide concentrated ore |
| 07/03/2013 | CN203034064U Separator for gold, lead and zinc in mine |
| 07/03/2013 | CN103184349A High purity zinc preparation device and method |
| 07/03/2013 | CN103184348A Preparation method of high purity zinc and device |
| 07/03/2013 | CN103184346A Method for selectively separating vanadium, lead and zinc from vanadinite |
| 07/03/2013 | CN103184335A Low-grade multi-metal sulfide mineral selective bioleaching technology |
| 07/03/2013 | CN102534208B Method for alkaline leaching of waste residue containing zinc ferrite or lean zinc ore |
| 07/02/2013 | CA2516411C Method for recovery of zinc by countercurrent leaching |
| 06/26/2013 | EP2606157A2 Process for separating and recovering metals |
| 06/26/2013 | CN203021630U Zinc smelting device with gas rotary kiln |
| 06/26/2013 | CN103173625A Method for efficiently leaching indium from zinc oxide smoke |
| 06/26/2013 | CN102586621B Method and device for removing sulfur and fluorine as well as chlorine and by zinc oxide serous fluid |
| 06/26/2013 | CN102181654B Method for recovering zinc, silver and copper from zinc leaching residue |
| 06/19/2013 | CN203007361U Crystallizer for purifying zinc dross by adopting double vacuum process |
| 06/19/2013 | CN103160692A Brass smelting furnace |
| 06/19/2013 | CN102492842B Method for purifying zinc sulfate solution |
| 06/19/2013 | CN102220493B Method and device for purifying zinc sulfate solution based on action of cavitation effect |
| 06/13/2013 | WO2013056348A4 Energy efficient salt-free recovery of metal from dross |
| 06/12/2013 | CN103146933A Method for separating and recycling zinc from secondary zinc resource by using distilling-condensing device |
| 06/12/2013 | CN103146927A Smelting method for treating zinc leached residues in mixed manner by using oxygen leached residues |
| 06/12/2013 | CN103146918A Process for directly producing electrolytic zinc from zinc extraction liquid |
| 06/12/2013 | CN102560087B Method for extracting indium and zinc from high-iron indium-containing zinc calcine and preparing iron oxide |
| 06/05/2013 | CN202968664U Insulating and heating system for producing high-purity zinc powder by using hot galvanizing slag |
| 06/05/2013 | CN202968661U Pure zinc powder liquation hearth with long service life |
| 06/05/2013 | CN103131871A Method for extracting pure copper and pure zinc from brass |
| 06/05/2013 | CN103131869A Extraction method for high-lead high-silver arsenious complex gold concentrate |
| 06/05/2013 | CN103131866A Method for recovering silver and zinc in wet processing of lead and silver slag |
| 06/05/2013 | CN103131861A Integrated utilization method of ironmaking dust removal ash |
| 06/05/2013 | CN101988155B Composite additive for purifying and removing cobalt in zinc hydrometallurgy |
| 05/30/2013 | WO2013076812A1 Method for producing nickel-containing acidic solution |
| 05/29/2013 | CN103122416A Equipment for extracting pure copper and pure zinc from brass and using method thereof |
| 05/28/2013 | CA2668506C Recovery of non-ferrous metals from by-products of the zinc and lead industry using electric smelting with submerged plasma |
| 05/22/2013 | CN202945302U Zinc recycling device using rotary kiln |
| 05/22/2013 | CN103119182A Process for separating and recovering metals |
| 05/22/2013 | CN101970699B Method for separation of zinc and extraction of iron values from iron ores with high concentration of zinc |
| 05/16/2013 | WO2013068645A1 Method for leaching a sulphidic metal concentrate |
| 05/16/2013 | CA2850909A1 Method for leaching a sulphidic metal concentrate |
| 05/15/2013 | CN103103365A Smelting method of zinc alloy |
| 05/15/2013 | CN103103344A Dressing-smelting combined treatment method for sulfate-containing lead-zinc smelting slags |
| 05/08/2013 | CN102021339B Method for eliminating cobalt redissolution in haydrometallurgy of zinc |
| 05/07/2013 | US8435323 Batchwise working-up recycling materials in a rotatable reactor |
| 05/01/2013 | CN103074495A Method for reclaiming zinc and iron by directly reducing blast furnace gas mud through microwave |
| 05/01/2013 | CN102676805B Low grade zinc concentrate associated lead and silver recovery process |
| 05/01/2013 | CN102329909B Method for extracting iron particles and zinc powder from dust of steel and iron plant |